$1.$ "Li xi" is.

Dẫn chứng : "Li xi" is an important part in Vietnamese'customs of Tet holiday, esspecally children.

$2.$ Because it represents the secrery and the privacy to advoid comparision as adults want children to regard the money as the gift of New Year, instead of being jealous of receiving less than others kids.

Dẫn chứng : It represents the secrery and the privacy to advoid comparision as adults want children to regard the money as the gift of New Year, instead of being jealous of receiving less than others kids.

$3.$ The red color signifies the properities and great luck according to Asian's belifies.

Dẫn chứng : The red color, the most popular color appearing in Vietnam, signifies the properities and great luck according to Asian's belifies.

$4.$ Yes, they do.

Dẫn chứng : After that, it is grandparents and adults' to give their lucky money to welcome their new age.

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